Pacer (train)
Overview
 
Pacer is the operational name of the British Rail
British Rail
British Railways , which from 1965 traded as British Rail, was the operator of most of the rail transport in Great Britain between 1948 and 1997. It was formed from the nationalisation of the "Big Four" British railway companies and lasted until the gradual privatisation of British Rail, in stages...

 Classes 140
British Rail Class 140
The British Rail Class 140 was the prototype of the Pacer diesel multiple unit. Much of the bodywork was constructed using Leyland National bus components, with the exception of the cabs, in 1980....

, 141
British Rail Class 141
The British Rail Class 141 was the first production model of the Pacer diesel multiple units.-Description:In the early 1980s British Rail were looking to replace the remaining 1950s first generation Diesel Multiple Units on lightly used branchlines...

, 142
British Rail Class 142
The British Rail Class 142 is a class of Pacer diesel multiple units used in the United Kingdom. 96 units were built by BREL in Derby between 1985 and 1987. They were a development of the earlier Class 141 which were introduced in 1984....

, 143
British Rail Class 143
The British Rail Class 143 is a diesel multiple unit, part of the Pacer family of trains introduced between 1985 and 1986. They originally worked in the North-East of England but were later transferred to Wales and South-West England....

 and 144
British Rail Class 144
The British Rail Class 144 "Pacer" diesel multiple units were built by BREL Derby from 1986-1987. A total of 23 units were built, replacing many of the earlier first-generation "Heritage" DMUs....

 diesel multiple unit
Diesel multiple unit
A diesel multiple unit or DMU is a multiple unit train consisting of multiple carriages powered by one or more on-board diesel engines. They may also be referred to as a railcar or railmotor, depending on country.-Design:...

 railbus
Railbus
A railbus is a very lightweight type passenger rail vehicle that shares many aspects of their construction with a bus, usually having a bus, or modified bus body, and having four wheels on a fixed base, instead of on bogies...

es, built between 1984 and 1987. Intended as a short-term solution to a shortage of rolling stock (with a lifespan of no more than 20 years), as of 2011 many Pacer railbuses are still in use.

Under the Disability Discrimination Act 1995
Disability Discrimination Act 1995
The Disability Discrimination Act 1995 is an Act of the Parliament of the United Kingdom which has now been repealed and replaced by the Equality Act 2010 , except in Northern Ireland where the Act still applies...

 all public transport must be accessible by 2019. Pacers are unable to meet this requirement so will all have to be withdrawn by the end of 2019.
 
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